Hybrid rugosa rose plant named ‘BOC rogosnif’

ABSTRACT

A new cultivar of Hybrid Rugosa rose,  Rosa  ‘BOC rogosnif’, characterized by its clusters of semi-double, cupped shaped blooms of beetroot purple suffused magenta color, white streaked eye, gold stamens, strong, cinnamon fragrance, dark green, glossy foliage, resistance to major fungal diseases, vigorous, upright, bushy habit, continuous flowering, readily propagated via budding or rooted cuttings, and hardy in U.S.D.A. Zones 3-10.

Botanical designation: Rosa hybrid.

Cultivar denomination: ‘BOC rogosnif’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Rosahybrida. The new cultivar will be referred to hereafter by its cultivarname, ‘BOC rogosnif’. ‘BOC rogosnif’ is a Hybrid Rugosa rose suitablefor use in the commercial market class of shrub roses, eco-friendly forresidential gardens, mixed flower plantings, and commercial landscaping.

The new cultivar of shrub rose is a selection from a controlled andplanned breeding program conducted in 1995, by the inventor located inBurnsville, Minn., U.S.A. The breeding was established to create roseswith greater winter hardiness, novel flower colors, continuous floweringwithout deadheading, very strong fragrance, complete disease resistance,and maintenance free.

The inventor created a new cultivar of Hybrid Rugosa rose ‘BOC rogosnif’designated as seedling No. CB-9505. From a planned breeding program, thecultivar was selected among seedlings derived from a cross made inBurnsville, Minn., U.S.A., in 1995. The cross was made between a HybridRugosa seedling of the inventor's ‘BOC germ’ as the female parent and aminiature rose seedling of the inventor ‘BOC eye’ as the male parent. In1997, the inventor identified ‘BOC rogosnif’ as a novel rose cultivar.

Asexual reproduction of ‘BOC rogosnif’ was performed by rooting softwoodand semi-hardwood cuttings and budding from the original plant of ‘BOCrogosnif’ from 1997 to 1998 in Burnsville, Minn., U.S.A. Thereproduction established and transmitted all the characteristics anddistinctions claimed through succeeding propagations. Thecharacteristics of this cultivar are stable and are reproduced true totype in successive generations.

SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and represent thecharacteristics of the new rose as observed for a period of 12 years inBurnsville, Minn., U.S.A. and 2 years of testing under contract atAmerican Rose Society trial grounds in Shreveport, La., U.S.A. Theseattributes in combination distinguish ‘BOC rogosnif’ as a uniquecultivar of rose, and distinguish it from its parents, as well as allother varieties of which I am aware. 1. ‘BOC rogosnif’ exhibits clustersof very fragrant cinnamon-scented, cupped, semi-double flowers of novelbeetroot purple color, suffused with bright magenta as they mature,white streaked eye, prominent gold stamens. 2. ‘BOC rogosnif’ isclassified as mauve and mauve blend by American Rose Society Standards.3. ‘BOC rogosnif’ exhibits glossy, dark green foliage that complimentsthe blooms and plant. 4. ‘BOC rogosnif’ exhibits an upright, bushy habitwith a height of 120 cm. 5. ‘BOC rogosnif’ exhibits a continuousseasonal flowering habit, without deadheading. 6. ‘BOC rogosnif’ hasshown excellent resistance to major fungal diseases. 7. ‘BOC rogosnif’is hardy in U.S.D.A. Zones 3 to 10. 8. ‘BOC rogosnif’ has the ability toroot and grow vigorously when budded, or by softwood and semi-hardwoodcuttings.

The new cultivar of shrub rose can be readily distinguished from itsparents and other cultivars. The female parent ‘BOC germ’ is a HybridRugosa seedling of the inventor, never released for sale, with fragrantdouble pink flowers and green, glossy, rugose foliage, diseaseresistant, winter hardy. The male parent ‘BOC eye’ is a miniature roseseedling of the inventor, never released for sale that is not winterhardy and has small, red and white striped flowers and small glossy,green foliage and is disease resistant. The Floribunda rose cultivar‘News’ (not patented), and the Hybrid Tea rose cultivar ‘Stephens BigPurple’ (U.S. Plant Pat. No. 6,262) are close comparison roses. Bothcultivars have similarity to ‘BOC rogosnif’ in having beetroot purplecolored flowers, per The Royal National Rose Society (London) colorclassification. ‘BOC rogosnif’ and ‘News’ also exhibit prominent goldstamens. ‘BOC rogosnif’ is winter hardy in U.S.D.A Zone 3, while ‘News’and ‘Stephens Big Purple’ are U.S.D.A. hardy in Zone 5. The rose varietywith the greatest similarity to ‘BOC rogosnif’ is ‘Harvest Home’, HybridRugosa (not patented). Both have identical plant habit, but ‘HarvestHome’ has a mauve-pink flower, slight fragrance, light green foliage,and poor repeat flowering.

The new cultivar, ‘BOC rogosnif’ will be marketed in the United Statesunder the “SNIFFER” trademark.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying colored photographs illustrate the overall appearanceand distinct characteristics of the new Hybrid Rugosa rose ‘BOCrogosnif’, as grown outdoors in trial blocks and mixed flower beds inBurnsville, Minn., U.S.A. The photographs were taken of 3-year-oldplants grown on their own roots.

FIG. 1 provides a close-up view of fully open flower clusters.

FIG. 2 provides a close-up view of all stages of flower bloom, hipformation, vegetative growth, and foliage.

DETAILED BOTANICAL DESCRIPTION

The following is a detailed description of my new rose cultivar withcolor descriptions using terminology in accordance with The RoyalHorticultural Society (London) Colour Chart (2001), except whereordinary dictionary significance of color is indicated. The phenotype ofthe new cultivar may vary with variations in environmental, climatic,and cultural conditions, as it has not been tested under all possibleenvironmental conditions. The description is based on observations ofplant cuttings and are not grafted onto rootstock.

-   Parentage:    -   -   Seed parent.—‘BOC germ’ a hybrid rugosa seedling of the            inventor (not patented).        -   Pollen parent.—‘BOC eye’ a miniature rose seedling of the            inventor (not patented).-   Classification:    -   -   Botanical.—Rosa hybrid.        -   Commercial market.—Shrub.        -   Class.—Hybrid Rugosa. Observations were made of plants 2-6            years of age propagated from cuttings and grown in tended            gardens located in Burnsville, Minn., U.S.A. and Shreveport,            La., U.S.A.-   Flower:    -   -   Blooming habit.—Continuous (U.S.D.A. Zone 4: late May until            late October) and reblooms without deadheading spent bloom.            Inflorescence Description: Type: Clusters of cupped-shaped            flowers. Longevity: 4 to 5 days on the plant depending on            temperature and sunlight exposure, 3 days as a cut flower.            Fragrance: Very strong, cinnamon scent. Petalage: Typically            under normal conditions 9-16 petals. Size: 10 cm in            diameter. Borne: Flowers are borne in regular, rounded            clusters of 4-6 per stem. Stems: Strong, average length            36-46 cm, diameter 3-10 mm, internode length an average of            2.5 cm. Form: Cupped when blooms first open. Permanence:            Blooms retain their form to the end.        -   Peduncle.—Length: Short 25-27 mm. Diameter: 3-4 mm. Surface:            Hairy. Color: Yellow-Green Group 147D. Strength: Stiff and            erect.        -   Bud.—Size: Average of 3.3 cm in length and 2.6 cm width when            the petals start to unfurl. Form: The bud form is long,            pointed, and ovoid. Color: When sepals first divide, bud            color is Red-Purple Group N57B. When half blown, the upper            and lower sides of the petals are a blend of Purple Group            N78A and Red-Purple Group N74A; texture is glabrous.        -   Sepals.—There are five unappendaged sepals. Color: Upper            surface: Green Group 138B. Lower surface: Green Group 138B.            Surface texture: Covered in fine hairs. Length: 25-30 mm.            Width: 6-7 mm. Shape: Ovate to oblong. Apex: Acuminate            serrated tips.        -   Receptacle.—Color: Green Group 138B. Shape: Elliptic. Size:            Medium about 10 mm wide and 11 mm long. Surface: Smooth.        -   Petals.—Color: When opening: Upper surface of petals are            Purple Group N78A and Red-Purple Group N74A. The lower            surface of petals is Purple Group N78B and Purple Group            N78C. The base of each petal has a distinct White Group 155B            petal spot on the upper and lower surface which streaks up            the petal for about 1 cm. Color: Fully open: Upper surface            of petals is Red-Purple Group N74A suffused with Red-Purple            Group 67B; lower surface of petals is Red-Purple Group N74B.            Variegation: There are occasional white streaks on petal            surfaces, White Group 155B. Discoloration: No change in            general tonality at the end of the first day. With full            maturity at end of third day, the colors suffuse to bright            magenta Red-Purple Group 67B. Further aging: No further            change. Petal texture: Medium, satiny to the touch. Petal            number: Commonly approximately 9 to 16 average under normal            conditions. Length: 4.5 cm to 5 cm. Width: 4.5 cm. Shape:            Obovate. Margin: Entire. Apex: Obcordate. Base: Cuneate.            Form: Cupped. Arrangement: Imbricated. Petaloid: Typically            none. Persistence: Excellent, petals drop off cleanly before            drying. Lastingness: On the plant 4 to 5 days. Cut Flower: 3            days.        -   Male reproductive organs.—Stamens: Number per flower            approximately 50 to 80. Anthers: Size: Length: 1 mm; width            1 mm. Arrangement: Regular around styles. Filament: Size:            Length: 6-8 mm; width: 0.25 mm. Color: Red Group 49D.        -   Pollen.—Color: Yellow Group 9C.        -   Female reproductive organs.—Pistils: Number per flower:            Average of 30. Styles: Color: Yellow-Green Group 154D;            Length: 5 mm.        -   Stigmas.—Color: Yellow-Green Group 154D. Length: 0.25 mm.        -   Ovary.—Color: Immature ovary: Yellow-Green Group 154D.        -   Mature hips.—Recurrent from August through October. Color:            Red Group 42C. Shape: Rounded to slightly elliptical,            medium. Size: 14 mm to 16 mm wide; 13 mm to 15 mm long.            Achenes (ripe): Color: Yellow-Green Group 150D. Typically            there are 15-20 achenes (which are single seeded fruits) per            hip. Shape: Irregular. Length: 4-5 mm. Width: 2-3 mm.-   Plant:    -   -   Foliage.—Compound leaves: Odd pinnate; average of 17 cm in            length and 11 cm in width, internode length is an average of            2 cm. Number of leaflets on normal mid-stem leaf: 7 to 9.            Quantity. Abundant.        -   Color.—New foliage: Upper Surface: Green Group 137B. Lower            surface: Green Group 137D. Leaflets: Size of terminal            leaflets: medium (6 cm long and 3.2 cm wide). Non-terminal            leaflets: medium (4 cm long and 2.5 cm wide). Shape: Oval.            Base shape: Obtuse. Apex shape: Acute. Texture: glossy,            rugose. Edge: Serrated. Serration: Single and small. Color:            New foliage of upper surface: Green Group 137B. New foliage            of lower surface: Green Group 137D. Old foliage of upper            surface: Green Group 137A. Old foliage of lower surface:            Green Group 137D. Vein color: New Foliage: Green Group 137B.            Old Foliage: Green Group 137A. Venation pattern of leaflets:            Pinnate reticulate.        -   Petiole.—Color: Green Group 137A.        -   Petiole rachis.—Color: Green Group 137B. Typical length:            11.5 cm and diameter 2 mm. Texture: Upper surface: smooth,            semi-glossy; Lower surface: rough with small prickles.        -   Stipules.—Number: 1 pair. Long and narrow with auricle            facing outward, (average of 3.5 cm in length and 1 cm in            width). Adnate to petiole, with leafy tips on apex (6 mm            length and 3 mm wide), serrated; bearded tip. Color: Upper            surface is Green Group 138B on margins, Green Group 138C            near center and Green Group 138D on middle ridge. Color:            Lower surface is Green Group 138B on margins, Green Group            138C in center. Texture: Upper surface glabrous; lower            surface pubescent. Disease resistance: resistance to powdery            mildew, blackspot, downy mildew, and rust under normal            growing conditions in Burnsville, Minn., U.S.A. and            Shreveport, La., U.S.A. Pest Resistance: Not observed.        -   Hardiness.—U.S.D.A. Zone 3-10.        -   Drought and heat tolerance.—Good adaptability in U.S.D.A.            Zone 8, Shreveport, La., U.S.A.        -   Growth.—Bushy; very vigorous, upright, and branching.        -   Age at maturity.—3 years. Size: Mature plant: height is 120            cm and width 90 cm. Canes: Heavy caliper, about 1.5-1.8 cm            in width, at widest point.        -   Rootstock.—Own root.        -   Wood.—Major Stems: Color: Young, Yellow-Green Group 147D.            Mature, Yellow-Green Group 147C. Bark: Young and mature,            smooth. Length: 80-90 cm. Diameter: 7-10 mm. Large prickles:            Quantity: On major stem from base 35-40 per 15 cm. Form:            Long, straight to slightly upward. Length: 5-7 mm. Texture:            Soft. Color: Young, Yellow-Green Group 147D. Mature,            Greyed-Orange Group 166B. Small Prickles: Quantity: 100-120            per 15 cm. Form: Short, straight. Length: 1-3 mm. Texture:            Soft, hairy. Color: Young, Yellow-Green Group 147D. Mature,            Greyed-Orange Group 166B. Branches: Color: Young,            Yellow-Green Group 147D. Mature, Yellow-Green Group 147C.            Length: 25-30 cm. Diameter: 4-5 mm. Internode length:            2.5 cm. Large Prickles: Quantity: On branch from base 25-35            per 15 cm. Form: Long, straight to slightly upward. Length:            3-4 mm. Texture: Soft. Color: Young, Yellow-Green Group            147D. Small Prickles: Quantity: 60-70 per 15 cm. Form:            Short, straight to slightly upward. Length: 1-2 mm. Texture:            Soft, hairy. Color: Young, Yellow-Green Group 147D. Mature,            Greyed-Orange Group 166B.

OTHER CHARACTERISTICS OF THE CULTIVAR DURING WINTER DORMANCY

My observations in U.S.D.A. Zone 4 indicate that the cultivar hasornamental appeal in the winter landscape: Color: Mature hips, Red Group42B. Color: Leaf foliage, Fall: Yellow Group 7A; Early winter:Grayed-Orange Group 171B. Color: Mature bark, Yellow-Green Group 148C.

I claim:
 1. A new and distinct cultivar of Hybrid Rugosa rose plantnamed ‘BOC rogosnif’ as herein illustrated and described, characterizedparticularly as to novelty by the unique flower color combination ofbeetroot purple and suffused magenta; white streaked eye; prominent goldstamens; strong, cinnamon fragrance; continuous flowering; vigorousgrowth; resistant to major fungal diseases; readily propagated viabudding or rooted cuttings.